KR100726521B1 - Sub frame structure of a vehicle - Google Patents

Sub frame structure of a vehicle Download PDF

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Publication number
KR100726521B1
KR100726521B1 KR1020050121093A KR20050121093A KR100726521B1 KR 100726521 B1 KR100726521 B1 KR 100726521B1 KR 1020050121093 A KR1020050121093 A KR 1020050121093A KR 20050121093 A KR20050121093 A KR 20050121093A KR 100726521 B1 KR100726521 B1 KR 100726521B1
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KR
South Korea
Prior art keywords
side member
main side
vehicle
sub
main
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KR1020050121093A
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Korean (ko)
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정유석
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B62D21/05—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members pinched frame type, i.e. formed of at least two longitudinal frame sections connected by other longitudinal frame sections of lesser transverse dimension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles

Abstract

A sub frame structure of a vehicle is provided to secure the maintenance efficiency of an engine oil fan, to exclude interference with tires, and to improve structural strength of the sub frame. A sub frame structure of a vehicle comprises a main side member(5), a sub side member(7), and a combining means. The main side member is formed with two horizontal units(1) and a connecting unit(3). The two horizontal units are separated up and down in parallel to each other. The connecting unit links the two horizontal units at the outside of a vehicle body. The sub side member has a sectional structure inserted between the two horizontal units of the main side member. The combining means combines and separates the main and sub side members. The sub side member is formed like a staple to be inserted into the main side member to shape a closed section with two ends together with the main side member. The combining means has a weld nut(9) and a combining bolt(11). The weld nut is integrally welded with the main side member. The combining bolt is combined with the weld nut through the main and sub side members.

Description

차량의 서브프레임 구조{SUB FRAME STRUCTURE OF A VEHICLE}Subframe structure of a vehicle {SUB FRAME STRUCTURE OF A VEHICLE}

도 1은 종래 기술에 의한 차량의 서브프레임이 설치된 상태를 도시한 도면,1 is a view showing a state in which a subframe of a vehicle according to the prior art is installed,

도 2는 도 1의 Ⅱ-Ⅱ선 단면도에 해당하는 본 발명 차량의 서브프레임 구조를 도시한 도면,FIG. 2 is a diagram illustrating a subframe structure of a vehicle of the present invention corresponding to the sectional view taken along the line II-II of FIG. 1;

도 3은 본 발명의 작용을 설명한 도면이다. 3 is a view illustrating the operation of the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 수평부 3; 연결부One; Horizontal section 3; Connection

5; 주측방멤버 7; 부측방멤버5; Main chamber member 7; Side Room Member

9; 웰드너트 11; 체결볼트9; Weld nut 11; Tightening Bolt

13; 측방멤버 15; 오일팬13; Lateral member 15; Oil pan

17; 공구 19; 오일팬볼트17; Tool 19; Oil Pan Bolt

본 발명은 차량의 서브프레임 구조에 관한 것으로서, 보다 상세하게는 서브프레임의 충분한 강성을 확보하여 차량의 충돌안정성과 승차감을 향상시킴과 아울러, 오일팬의 정비가 용이하게 이루어지도록 하는 기술에 관한 것이다.The present invention relates to a subframe structure of a vehicle. More particularly, the present invention relates to a technology for securing a sufficient rigidity of a subframe to improve collision stability and ride comfort of a vehicle and to easily maintain an oil pan. .

차량의 서브프레임은 엔진룸의 하측에 설치되어, 엔진 및 변속기를 지지하고 서스펜션아암을 지지하는 등의 역할을 하며, 충돌사고시 충돌에너지를 흡수하게 된다.The subframe of the vehicle is installed at the lower side of the engine room to support the engine and the transmission, to support the suspension arm, and to absorb the collision energy during a crash.

도 1은 종래의 서브프레임(500)과 그 위에 장착된 엔진(502)을 차체의 하측방향에서 관측한 도면이다.1 is a view illustrating a conventional subframe 500 and an engine 502 mounted thereon from a lower side of a vehicle body.

엔진의 오일팬(504)에 체결되는 다수의 오일팬볼트(506)들이 상기 서브프레임(500)에 의해서 차체의 하측으로부터 직선적인 접근이 어려운 상태여서, 오일팬(504)의 정비성이 떨어진다.Since a plurality of oil pan bolts 506 fastened to the oil pan 504 of the engine are difficult to access linearly from the lower side of the vehicle body by the subframe 500, the oil pan 504 is poorly maintainable.

오일팬(504)의 정비성을 확보하기 위해서는 서브프레임(500) 측방부의 단면을 축소하거나 서브프레임(500) 측방부의 형상을 차체 외측으로 변형시켜야 하는데, 측방부의 단면을 축소하게 되면, 충돌사고시에 충격에너지의 흡수 성능에 악영향을 주게 되고, 전체적인 강성약화로 진동 소음 특성이 나빠지게 되며, 측방부의 형상을 차체 외측으로 변형시키면 타이어와의 접촉우려가 발생되는 등의 문제가 발생된다.In order to ensure the maintainability of the oil pan 504, the cross section of the side portion of the subframe 500 should be reduced or the shape of the side portion of the subframe 500 should be deformed to the outside of the vehicle body. It adversely affects the absorbing performance of the impact energy, the vibration noise characteristics deteriorate due to the weakening of the overall stiffness, and if the shape of the side portion is deformed to the outside of the vehicle, problems such as contact with the tire is generated.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 엔진 오일팬의 정비성을 충분히 확보하면서, 타이어와의 간섭을 배제한 상태에서 서브프레임의 구조적 강성도 향상시킬 수 있도록 한 차량의 서브프레임 구조를 제공함에 그 목적이 있다.The present invention has been made to solve the above-described problems, the subframe structure of the vehicle to improve the structural stiffness of the subframe in the state of eliminating interference with the tire while ensuring sufficient maintainability of the engine oil pan The purpose is to provide.

상기한 바와 같은 목적을 달성하기 위한 본 발명 차량의 서브프레임 구조는Subframe structure of the vehicle of the present invention for achieving the above object is

평행하게 상하로 이격된 두 수평부와 상기 두 수평부를 차체의 외측에서 연결하는 연결부로 이루어진 단면구조를 가진 주측방멤버와;A main side member having a cross-sectional structure consisting of two horizontal parts spaced vertically spaced apart in parallel and a connecting part connecting the two horizontal parts outside the vehicle body;

상기 주측방멤버의 상기 두 수평부 사이로 삽입될 수 있는 단면구조를 가진 부측방멤버와;A secondary side member having a cross-sectional structure that can be inserted between the two horizontal portions of the main side member;

상기 주측방멤버와 부측방멤버를 결합 또는 분리할 수 있도록 하는 체결수단Fastening means for coupling or separating the main side member and the sub-side member

을 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 2를 참조하면, 본 발명 실시예는 평행하게 상하로 이격된 두 수평부(1)와 상기 두 수평부(1)를 차체의 외측에서 연결하는 연결부(3)로 이루어진 단면구조를 가진 주측방멤버(5)와; 상기 주측방멤버(5)의 상기 두 수평부(1) 사이로 삽입될 수 있는 단면구조를 가진 부측방멤버(7)와; 상기 주측방멤버(5)와 부측방멤버(7)를 결합 또는 분리할 수 있도록 하는 체결수단을 포함하여 구성된다.Referring to Figure 2, the embodiment of the present invention is a main side with a cross-sectional structure consisting of two horizontal parts (1) spaced vertically spaced in parallel and a connecting portion (3) connecting the two horizontal parts (1) from the outside of the vehicle body. Member 5; A secondary side member (7) having a cross-sectional structure that can be inserted between the two horizontal portions (1) of the main side member (5); It comprises a fastening means for coupling or separating the main side member (5) and the side member (7).

본 실시예에서는 도 2와 같이 상기 연결부(3)를 단순한 직선으로 형성하였으나, 보다 강성확보에 유리한 곡선이나 다른 굴곡을 가진 형태로 변형하는 것도 가능할 것이다.In the present embodiment, as shown in FIG. 2, the connection part 3 is formed as a simple straight line, but it may be possible to deform it into a shape having a curve or other bend, which is advantageous for securing rigidity.

상기 부측방멤버(7)는 상기 주측방멤버(5)와 함께 폐단면을 형성하도록 두 단부가 상기 주측방멤버(5)의 내부로 삽입되도록 설치된 ㄷ자형 단면으로 형성하였 다.The secondary side member (7) was formed with a c-shaped cross-section installed so that the two ends are inserted into the main side member (5) to form a closed cross-section with the main side member (5).

따라서, 상기 주측방멤버(5)의 두 수평부(1)는 상기 부측방멤버(7)를 주측방멤버(5)에 결합하거나 빼낼 때 상기 부측방멤버(7)를 가이드하는 역할 및 상기 부측방멤버(7)에 면착되어 일체화됨으로써, 내부를 폐공간으로 형성하도록 하는 구조적 기능도 수행한다.Therefore, the two horizontal parts 1 of the main side member 5 serve to guide the sub side member 7 when the sub side member 7 is coupled to or withdrawn from the main side member 5. By being integral with the side members 7, the structural function of forming the interior into a closed space is also performed.

물론, 상기 부측방멤버(7)도 상기 주측방멤버(5)의 두 수평부(1)와 직접 접촉하지 않는 부분은 도 2와 같은 단순한 직선형이 아니라, 구조적 강성을 확보하기 위한 다른 굴곡을 더 포함한 형상으로 변형하는 것도 가능하다.Of course, the part that does not directly contact the two horizontal parts 1 of the main side member 7 is also not a simple straight line as shown in FIG. 2, but has another bend to secure structural rigidity. It is also possible to deform to the included shape.

본 실시예에서, 상기 체결수단은 상기 주측방멤버(5)에 일체로 용접된 웰드너트(9)와, 상기 주측방멤버(5) 및 상기 부측방멤버(7)를 관통하여 상기 웰드너트(9)에 체결되는 체결볼트(11)로 구성하였다.In this embodiment, the fastening means is a weld nut (9) integrally welded to the main side member (5), the main side member (5) and the side side member (7) through the weld nut ( 9) was composed of a fastening bolt 11 is fastened.

상기한 바와 같이 구성된 측방멤버(13)를 구비한 서브프레임을 구비하면, 엔진 오일팬(15)의 정비성을 충분히 확보하고 타이어와의 간섭 염려도 없이 서브프레임의 강성을 충분하게 확보하는 것이 가능하다.If the subframe provided with the side member 13 comprised as mentioned above is provided, it is possible to ensure the maintainability of the engine oil pan 15 enough, and to fully ensure the rigidity of the subframe without fear of interference with a tire. Do.

즉, 서브프레임의 측방멤버(13)를 상기와 같이 주측방멤버(5)와 여기에 착탈가능하게 결합된 부측방멤버(7)로 형성하여, 자체적으로 차량에 필요한 충분한 강성을 제공할 수 있도록 한 상태에서, 오일팬의 정비시에는 상기 주측방멤버(5)로부터 상기 부측방멤버(7)를 분리하여, 오일팬 정비를 위한 공구가 삽입될 공간을 확보할 수 있도록 하는 것이다.That is, the side member 13 of the subframe is formed as the main side member 5 and the sub side member 7 detachably coupled thereto as described above, so as to provide sufficient rigidity for the vehicle by itself. In one state, during maintenance of the oil pan, the sub-side member 7 is separated from the main side member 5 so as to secure a space into which a tool for oil pan maintenance is inserted.

따라서, 평상시에는 상기 부측방멤버(7)가 오일팬 정비시에 필요한 공구 삽 입공간을 확보하기 어려운 위치까지 차지하면서 장착되어 있어도, 도 3과 같이 상기 체결볼트(11)를 풀고 주측방멤버(5)로부터 부측방멤버(7)를 분리해내면, 비로소 오일팬(15)의 정비에 필요한 공구 삽입공간이 형성되어 공구(17)가 오일팬볼트(19)에 용이하게 접근할 수 있는 것이다.Therefore, even if the secondary side member 7 is normally mounted while occupying up to a position where it is difficult to secure a tool insertion space required for oil pan maintenance, as shown in FIG. 3, the fastening bolt 11 is loosened and the main side member ( When the side member 7 is removed from 5, the tool insertion space necessary for the maintenance of the oil pan 15 is formed so that the tool 17 can easily access the oil pan bolt 19.

그러므로, 서브프레임의 설계시에는 상기와 같은 위치관계에 의하여 오일팬의 정비성을 고려하지 않은 상태에서 서브프레임의 강성확보에 주안점을 두고 설계할 수 있고, 이는 차량에 필요한 서브프레임의 충분한 강성확보가 가능하도록 하여 차량의 진동 소음 특성을 향상시킬 수 있고, 또한 로워암의 차체측 마운팅포인트를 최대한 차체 내측으로 위치시킬 수 있도록 하여 차량의 승차감을 향상시키는 것도 가능하다.Therefore, when designing the subframe, it is possible to design with the focus on securing the stiffness of the subframe without considering the oil pan's maintainability due to the positional relationship as described above. It is possible to improve the vibration noise characteristics of the vehicle, and also to improve the ride comfort of the vehicle by allowing the lower arm side mounting point of the lower arm to be positioned inside the vehicle body as much as possible.

아울러, 상기한 바와 같은 서브프레임 구조는 별도의 보강부재를 필요로 하지 않고도 충분한 서브프레임의 강성확보가 가능하여, 차량의 원가 및 중량을 저감시킬 수 있다.In addition, the subframe structure as described above can secure sufficient rigidity of the subframe without requiring a separate reinforcing member, thereby reducing the cost and weight of the vehicle.

물론, 오일팬의 정비가 완료된 후에는 다시 부측방멤버(7)를 주측방멤버(5)에 삽입하고 상기 체결볼트(11)를 관통하여 웰드너트(9)에 결합시킴으로써, 다시 서브프레임의 충분한 구조적 강성이 확보되도록 한다.Of course, after the maintenance of the oil pan is completed, by inserting the secondary side member (7) to the main side member (5) again and penetrating the fastening bolt 11 to the weld nut (9), sufficient subframe again Ensure structural rigidity.

또한, 상기 체결볼트(11)는 서브프레임의 측방멤버(13)의 중앙부위를 보강하는 역할을 함께 수행하게 되므로, 상대적으로 보다 강한 서브프레임 강성의 확보가 가능하다.In addition, since the fastening bolt 11 serves to reinforce the central portion of the side member 13 of the subframe, it is possible to secure a relatively stronger subframe rigidity.

이상과 같이 본 발명에 의하면, 서브프레임의 측방멤버를 좌우로 분리하여 결합할 수 있는 구조로 형성함으로써, 엔진 오일팬의 정비성을 충분히 확보하면서도, 타이어와의 간섭을 배제한 상태에서 서브프레임의 구조적 강성도 향상시킬 수 있도록 한다.According to the present invention as described above, by forming the side members of the subframe in a structure that can be separated by combining left and right, while maintaining the maintenance of the engine oil pan, while maintaining the maintenance of the engine oil, the subframe structural structure It also helps to improve the stiffness.

Claims (3)

평행하게 상하로 이격된 두 수평부와 상기 두 수평부를 차체의 외측에서 연결하는 연결부로 이루어진 단면구조를 가진 주측방멤버와;A main side member having a cross-sectional structure consisting of two horizontal parts spaced vertically spaced apart in parallel and a connecting part connecting the two horizontal parts outside the vehicle body; 상기 주측방멤버의 상기 두 수평부 사이로 삽입될 수 있는 단면구조를 가진 부측방멤버와;A secondary side member having a cross-sectional structure that can be inserted between the two horizontal portions of the main side member; 상기 주측방멤버와 부측방멤버를 결합 또는 분리할 수 있도록 하는 체결수단Fastening means for coupling or separating the main side member and the sub-side member 을 포함하여 구성된 것을 특징으로 하는 차량의 서브프레임 구조.Subframe structure of a vehicle, characterized in that configured to include. 제1항에 있어서, 상기 부측방멤버는The method of claim 1, wherein the sub-lateral member 상기 주측방멤버와 함께 폐단면을 형성하도록 두 단부가 상기 주측방멤버의 내부로 삽입되도록 설치된 ㄷ자형 단면으로 형성된 것It is formed with a U-shaped cross-section installed so that the two ends are inserted into the main side member to form a closed cross-section with the main side member 을 특징으로 하는 차량의 서브프레임 구조.Subframe structure of the vehicle, characterized in that. 제1항에 있어서, 상기 체결수단은The method of claim 1, wherein the fastening means 상기 주측방멤버에 일체로 용접된 웰드너트와;A weld nut integrally welded to the main side member; 상기 주측방멤버 및 상기 부측방멤버를 관통하여 상기 웰드너트에 체결되는 체결볼트;A fastening bolt fastened to the weld nut through the main side member and the sub side member; 로 구성된 것을 특징으로 하는 차량의 서브프레임 구조.Subframe structure of a vehicle, characterized in that consisting of.
KR1020050121093A 2005-12-09 2005-12-09 Sub frame structure of a vehicle KR100726521B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274475A (en) * 1988-09-08 1990-03-14 Mazda Motor Corp Frame structure for automobile
KR960028784U (en) * 1995-02-27 1996-09-17 Structure of car frame
KR20010017002A (en) * 1999-08-06 2001-03-05 이계안 Front sub-frame of vehicle
KR100539434B1 (en) * 2004-08-17 2005-12-27 현대모비스 주식회사 Part maintenance type sub frame in vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274475A (en) * 1988-09-08 1990-03-14 Mazda Motor Corp Frame structure for automobile
KR960028784U (en) * 1995-02-27 1996-09-17 Structure of car frame
KR20010017002A (en) * 1999-08-06 2001-03-05 이계안 Front sub-frame of vehicle
KR100539434B1 (en) * 2004-08-17 2005-12-27 현대모비스 주식회사 Part maintenance type sub frame in vehicle

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